src.h

   1 /* fswebcam - FireStorm.cx's webcam generator                */
   2 /*===========================================================*/
   3 /* Copyright (C)2005 Philip Heron <phil@firestorm.cx>        */
   4 /*                                                           */
   5 /* This program is distributed under the terms of the GNU    */
   6 /* General Public License, version 2. You may use, modify,   */
   7 /* and redistribute it under the terms of this license. A    */
   8 /* copy should be included with this source.                 */
   9
  10 #include <stdint.h>
  11 #include <sys/time.h>
  12
  13 #ifndef INC_SRC_H
  14 #define INC_SRC_H
  15
  16 #define SRC_TYPE_NONE   (0)
  17 #define SRC_TYPE_DEVICE (1 << 0) /* Can capture from a device */
  18 #define SRC_TYPE_FILE   (1 << 1) /* Can capture from a file */
  19
  20 /* When updating the palette list remember to update src_palette[] in src.c */
  21
  22 #define SRC_PAL_ANY     (-1)
  23 #define SRC_PAL_PNG     (0)
  24 #define SRC_PAL_JPEG    (1)
  25 #define SRC_PAL_MJPEG   (2)
  26 #define SRC_PAL_RGB32   (3)
  27 #define SRC_PAL_BGR32   (4)
  28 #define SRC_PAL_RGB24   (5)
  29 #define SRC_PAL_BGR24   (6)
  30 #define SRC_PAL_YUYV    (7)
  31 #define SRC_PAL_UYVY    (8)
  32 #define SRC_PAL_YUV420P (9)
  33 #define SRC_PAL_NV12MB  (10)
  34 #define SRC_PAL_BAYER   (11)
  35 #define SRC_PAL_SGBRG8  (12)
  36 #define SRC_PAL_RGB565  (13)
  37 #define SRC_PAL_RGB555  (14)
  38 #define SRC_PAL_GREY    (15)
  39
  40 #define SRC_LIST_INPUTS     (1 << 1)
  41 #define SRC_LIST_TUNERS     (1 << 2)
  42 #define SRC_LIST_FORMATS    (1 << 3)
  43 #define SRC_LIST_CONTROLS   (1 << 4)
  44 #define SRC_LIST_FRAMESIZES (1 << 5)
  45 #define SRC_LIST_FRAMERATES (1 << 6)
  46
  47 /* The SCALE macro converts a value (sv) from one range (sf -> sr)
  48    to another (df -> dr). */
  49 #define SCALE(df, dr, sf, sr, sv) (((sv - sf) * (dr - df) / (sr - sf)) + df)
  50
  51 typedef struct {
  52         char    *name;
  53 } src_palette_t;
  54
  55 extern src_palette_t src_palette[];
  56
  57 typedef struct {
  58         char *name;
  59         char *value;
  60 } src_option_t;
  61
  62 typedef struct {
  63
  64         /* Source Options */
  65         char *source;
  66         uint8_t type;
  67
  68         void *state;
  69
  70         /* Last captured image */
  71         uint32_t length;
  72         void *img;
  73
  74         /* Input Options */
  75         char    *input;
  76         uint8_t  tuner;
  77         uint32_t frequency;
  78         uint32_t delay;
  79         uint32_t timeout;
  80         char     use_read;
  81
  82         /* List Options */
  83         uint8_t list;
  84
  85         /* Image Options */
  86         int palette;
  87         uint32_t width;
  88         uint32_t height;
  89         uint32_t fps;
  90
  91         src_option_t **option;
  92
  93         /* For calculating capture FPS */
  94         uint32_t captured_frames;
  95         struct timeval tv_first;
  96         struct timeval tv_last;
  97
  98 } src_t;
  99
 100 typedef struct {
 101
 102         char *name;
 103
 104         uint8_t flags;
 105
 106         int (*open)(src_t *);
 107         int (*close)(src_t *);
 108         int (*grab)(src_t *);
 109
 110 } src_mod_t;
 111
 112 extern int src_open(src_t *src, char *source);
 113 extern int src_close(src_t *src);
 114 extern int src_grab(src_t *src);
 115
 116 extern int src_set_option(src_option_t ***options, char *name, char *value);
 117 extern int src_get_option_by_number(src_option_t **opt, int number, char **name, char **value);
 118 extern int src_get_option_by_name(src_option_t **opt, char *name, char **value);
 119 extern int src_free_options(src_option_t ***options);
 120
 121 #endif
 122